Copy# Auto-detect changes on current branch
/agileflow:impact
 
# Analyze specific files
/agileflow:impact FILES=src/api/auth.ts,src/middleware/jwt.ts
 
# Skip test execution
/agileflow:impact RUN_TESTS=no

CopyYour Change: src/api/auth.ts
  ├─ Direct dependents (files that import this)
  │  ├─ src/api/auth/index.ts
  │  ├─ src/middleware/auth.ts
  │  └─ tests/api/auth/login.test.ts
  └─ Indirect dependents (2-level chain)
     ├─ src/app.ts
     ├─ src/routes.ts
     └─ [more...]

CopyCritical (Always Run):
  ✓ tests/api/auth/login.test.ts
  ✓ tests/integration/auth-flow.test.ts
 
Recommended (Affected Indirectly):
  ⚠️  tests/api/users/*.test.ts
  ⚠️  tests/e2e/login.spec.ts
 
Optional (Low Risk):
  - tests/components/Header.test.tsx

Copy⚠️  BREAKING CHANGE DETECTED
 
File: src/api/auth/login.ts
Function: login()
 
Before:
  login(email: string, password: string): Promise<Token>
 
After:
  login(credentials: LoginRequest): Promise<AuthResponse>
 
Affected callers:
  - src/middleware/auth.ts:45
  - tests/api/auth/login.test.ts:23
  - tests/integration/auth-flow.test.ts:67

CopyChanged Lines:  45-52 (8 lines)
Test Coverage:  87%
Uncovered:      Lines 50-51 (2 lines not tested)
 
⚠️  2 lines of changes have no test coverage
    Consider adding tests for these paths

Copy/agileflow:impact

Copy/agileflow:impact FILES=src/api/auth.ts,src/middleware/jwt.ts

Copy/agileflow:impact BASE=develop

Copy/agileflow:impact RUN_TESTS=no

Copy/agileflow:impact
 
# Output:
# Impact Analysis Report
#
# Changed Files: 3
# - src/api/auth.ts (23 lines modified)
# - src/middleware/auth.ts (15 lines modified)
# - src/components/LoginForm.tsx (12 lines modified)
#
# Affected Files: 8
# - Direct dependents: 3
# - Indirect dependents: 5
#
# Tests to Run: 5
# - Critical: 2 (direct tests)
# - Recommended: 3 (integration tests)
#
# Coverage: 87% (2 lines uncovered)

Copy/agileflow:impact FILES=src/middleware/auth.ts
 
# Output:
# Changed: src/middleware/auth.ts (34 lines)
#
# Direct Dependents (6):
#   - src/api/auth/index.ts
#   - src/api/users/index.ts
#   - src/api/posts/index.ts
#   - src/middleware/validate.ts
#   - src/app.ts
#   - tests/middleware/auth.test.ts
#
# Tests to Run:
#   ✓ tests/middleware/auth.test.ts
#   ⚠️  tests/integration/auth-flow.test.ts
#   ⚠️  tests/api/*/index.test.ts

Copy/agileflow:impact
 
# Output includes:
# ⚠️  BREAKING CHANGE DETECTED
#
# Function signature changed in src/api/auth/login.ts
#
# Before: login(email, password)
# After:  login(credentials)
#
# Update these callers:
#   - src/middleware/auth.ts:45
#   - tests/api/auth/login.test.ts:23

Copy# Impact Analysis Report
 
**Branch**: feature/user-auth
**Base**: main
**Changed Files**: 5
**Potentially Affected Files**: 23
**Tests to Run**: 12

Copy### src/api/auth/login.ts (MODIFIED)
 
**Type**: API endpoint
**Changes**: 23 lines modified
 
**Direct dependents** (3):
- src/api/auth/index.ts (exports this endpoint)
- src/middleware/auth.ts (uses login logic)
- tests/api/auth/login.test.ts (tests this file)
 
**Indirect dependents** (8):
- src/app.ts → src/api/auth/index.ts → login.ts
- src/routes.ts → src/api/auth/index.ts → login.ts
- [6 more...]
 
**Related tests**:
- ✅ tests/api/auth/login.test.ts (exists)
- ⚠️  tests/integration/auth-flow.test.ts (may need updates)
- ❌ Missing: E2E test for login flow
 
**Related stories**:
- US-0042: Implement JWT authentication (IN-REVIEW)
 
**Coverage**: 87% (lines 45-52 uncovered)

Copy⚠️  BREAKING CHANGE
 
Function: login()
Before:   login(email: string, password: string)
After:    login(credentials: LoginRequest)
 
Callers to update:
- src/middleware/auth.ts:45
  OLD: login(user.email, user.password)
  NEW: login({ email: user.email, password: user.password })

Copy⚠️  BREAKING CHANGE
 
Removed export: validateSession
(was in src/middleware/auth.ts)
 
Callers will break:
- src/api/posts/index.ts:23 - imports validateSession
- tests/middleware/auth.test.ts:45

Copy⚠️  BREAKING CHANGE
 
Type changed: User interface
Added required field: verified_at (Date)
 
Callers creating User without field:
- src/api/auth/signup.ts:67
- src/seeders/users.ts:12

CopyChanged: 3 files
Affected: 8 files
Tests: 5 need to run

CopyRunning critical tests...
✅ tests/api/auth/login.test.ts (12 tests, 345ms)
✅ tests/middleware/auth.test.ts (8 tests, 234ms)
⚠️  tests/integration/auth-flow.test.ts (3 tests, FAILED)
 
Test Results: 20 passed, 3 failed

CopyTests failed. Options:
1. Fix code and re-run tests
2. Create story for regression
3. Skip and investigate later
 
What should we do?

Copy⚠️  Breaking changes found!
 
These functions changed signature:
- login() in src/api/auth.ts
 
3 callers need to be updated:
- src/middleware/auth.ts:45
- tests/api/auth/login.test.ts:23
 
Create stories to update these files?

Copysrc/api/auth/login.ts (CHANGED)
├── src/api/auth/index.ts (direct)
│   ├── src/app.ts (indirect)
│   └── src/routes.ts (indirect)
├── src/middleware/auth.ts (direct)
│   └── src/app.ts (indirect)
└── tests/api/auth/login.test.ts (test)

Copy- name: Impact analysis
  run: npx claude-code /agileflow:impact BASE=main
 
- name: Run affected tests
  run: npm test -- $(cat affected-tests.txt)
 
- name: Check for breaking changes
  run: |
    if grep -q "BREAKING CHANGE" impact-report.md; then
      echo "::warning::Breaking changes detected"
    fi

Copy# Check impact of your changes
/agileflow:impact
 
# Run the recommended tests
# If any fail, fix before submitting PR

Copy# You made changes based on review
/agileflow:impact
 
# Make sure nothing broke
# Re-run affected tests

Copy# Final check before merge
/agileflow:impact BASE=main
 
# Ensure no regressions
# All critical tests passing

Copy# Before large refactor
/agileflow:baseline "Before refactor"
 
# Make changes
# Check impact
/agileflow:impact
 
# If breaking changes, understand them
# Update callers accordingly

Copy# After each major change
/agileflow:impact
 
# Catch breakage early
# Easier to fix one change than many

CopyDirect impact: 3 affected files
Indirect impact: 8 more affected files
 
Fixing direct isn't enough - test indirects too

Copy87% coverage = 13% of changes untested
Missing tests = potential bugs from untested paths
 
Add tests for uncovered lines

Copy⚠️  Function signature changed
Need to update 5 callers
Create stories to track the updates